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(Nol Model.) C. W. SQUIRES. 3 Sheets-Sheet 1.

LOCK.

Patented Peb. 18, 1896.

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(No mm1.) a sheets-sheet 2.

c. W. SQUIRES. LOCK.

No, 554,965. Patented Peb. 18, 1896.

' Fly-' r'No Model.) 3 Sheets-Sheet 3.

' C. W. SQUIRES.

LOCK.

4, 7 8 6. No 55 fbg. Patented Peb 18 1 9I l UNITED STAT-ns ILC@ Look.

SPECIFICATION forming part of Letters Patent No. 554,965, dated February 18, 1896. Application filed September 26, 1895. Serial No. 563,710. (No model.)

T0 all whom t may concern.-

Be it known that I, CHARLES W. SQUIREs, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Locks, of which the following is a specication. f

This invention relates to looks for doors and analogous uses, and more particularly to the description of locks termed night-latch locks, the object being to provide an im proved lock of this class; and the invention consists in the improved details of lock construction, all as hereinafter fully described.

In the drawings forming part of this specification, Figure 1 is a rear side elevation of a lock-case and lock mechanism therein contained embodying my improvements, said figure also showing a detail part of the lock in side elevation and the plate which receives the outer endof the bolt. Fig. 2 is a front end view of the lock, a part of a door to which the lock maybe secured being shown in this iigure. Fig. 1n is a perspective view of `said bolt-receiving plate, this figure indicating in dotted'lines the operative position of a lock part below described. Fig. 1b is a perspective view of a plate having an opening therethrough to receive the end of the bolt'. Fig. 3 illustrates sections of a door and doorjamb and the lock and bolt-receiving plate thereon in section on line 3 3, Fig. 1, this iigure illustrating also the escutcheon for the lock in section. Fig. 4 is a sectional view of the lock on lline 4, Fig. 1, and of a part of a door and the escutcheon therein. Figs. 5 and 6 are similar views of the lock to that shown in Fig. 1, but showing the mechanism thereof indifferent operative positions. Fig. 7 is a perspective View of the key and of detail parts of the lock hereinafter described. Fig. 8 embraces, in perspective views, the case and detail parts of the look mechanism, and including the partsin detail of the escutcheon, as below described.

In the drawings, A indicates the lock-case, A2 being the removable back plate thereof, and 2 the face-plate at one end thereof through which the outer end of the main bolt 3 projects.

B indicates a tumbler-setting bolt, and c c arms thereon, e e studs on said arms, and a a perforated post on one side of bolt B.

C is a projecting stud on the inner surface of the lock-case A, and b is a spring-supporting rod having one end abutting against said Vstud C, and its opposite end extends freely through the perforation in said post. A coiled spring (l is placed on said rod b, and is, nor- Inally, more or less compressed between said post a and stud C, and acts to slide bolt B outwardly through plate 2.

D is a knob having a shank extending through the lock-case A and fixed in or to bolt B.

The bolt 3 of the lock is constructed as shown in perspective View among the parts of the lock in Fig. 8, and its place therein is that illustrated in Figs. 5 and 6. A two-armed lever E occupies a position in the lock under said bolt 3, and is fixed on the hollow shank 1 of an operating-knob 5, said shank having a section of its inner end cut off to form two shoulders 6 G thereon with which the key engages for the operation of said bolt 3 thereby, as below described. The said bolt 3 has two wings 7 7 extending laterally from the opposite edges thereof, each of said wings having a lip 8 thereon perforated to receive the end of a spring-sustaining rod 9, and a lip 10 for engagement with one arm of said lever E. Bolt 3 has also a stud or ward 12 thereon for operation in connection with the tumblers of the lock, and apin or stud 13 on one edge for engagement with the said bolt B, all as below described. Springs 14 are supported on said rods 9, which act to shoot bolt 3 outwardly, said rods abutting by one end against the lockcase, as shown in Figs. l, 5, and 6. The said bolt B, located between bolt 3 and the side of case A, and also the latter-named bolt, are both properly supported for independent and for coinciding sliding movements, as and for the purposes below described. The said laterally-projecting pin-13 on bolt 3 is for engagement with one of the studs e on an arm c of the bolt B, to the end that when said bolt 3 is drawn into the lock by the action of the two-armed lever E, or otherwise, bolt B must take a like position.

The tumblers F of the lock, made from suitable metal plates, of any desired number, (three being herein shown,) are of oblong form, and are pivoted by pivot-stud r to the lockcase. Each tumbler has the edge recesses z' i,

ICO

the longitudinal slot o in its frame end, the opening a at the inner end of said slot, and a key-opening m through it. Said recesses, slots, and openings n in the tumblers are substantially in the same positions in each of them.

The key-engaging borders of the openings m in the tumblers F (see Fig. 7 and 8) are in each tumbler arranged preferably at different distances from a longitudinally-central line drawn from the center of the tumbler-pivot r to a point centrally between the borders of the slot o in the free end of the tumbler. The said variation of the positions of the parts of the tumblers which the key15 engages provides convenient means for effecting innumerablechanges in tumblers and keys,\whereby greater security against the unauthorized operation of the loekiis` ob-4 tained. The opera-tive positions of said-tu1n blersin the manipulation of the lock are those shown in Figs. 1, 5, and `G. Fig. shows them supported in a horizontal position by engagement with one of thestuds e on an arnrof the bolt B: Figs `1 and G show them with their free ends dropped by gravity to different po- 1 sit-ions, the first to one by which the bolt is locked in an outward one, and the second one by which thebolt is locked in an inward position.

A key-guiding post J, Fig. 8, having a longitudinal slot j' therein, passes through `said key-openingsm in the tumblers, and one end thereof enters the inner end of the said hollow shank l of the knob 5, Figs. i and 7. post J has a diameter within the key-openin gs mofthe tumblers of less extent than the width of that part of `thekey 15 lying' between the edges thereof `which are engaged by the tumblers, to the end that-said key has a clear engagement with said tumblers. Said key when put into the lock has its extremity t entering very nearly to the bottom of the slot -in said post J, (see Fig. 4,) and thereby bringing the projection t1 on one side of the key (see Fig. 7) to a position :in the lock whereby it will, when turned to lift thetuinblers, engage one of the `shoulders G G on said hollow shank t and thus turn thelatter andthe lever E thereon to bring said lever against one of lips 10 on bolt 3 and thus draw back said bolt. The turning of the key to operate leverE, as aforesaid, causes the tumblers to be brought to the positions shown in Fig. 5, wherebythe slots o in the tumblers are all free to allow the ward 12 on bolt 3 to enter them and permit the bolt to move back.

The escutcheon and key guiding parts which are adapted f or use with locks of this class are illustrated in Figs. 3, 4, and S, wherein 1G is a metal washer applied between the lock and the door 17. 1S is a tube passing through said washer and having a langeon its inner end-engaging therewith. The said tube 18 -has its outer end internally screwthreaded, as shown. The escutcheon-plate 19 has the tube 2O fixed in its inner side,

Said 1 which is exteriorly screw-threaded for engagement with the interior of said tube 1S. A key-guidin g barrel 21, which is longitudinally slotted to receive the key 15, is iitted closely into said tube 20, whereby it is held in place therein, but can be turned by the key when the latter is entered into said post J for operating the tumblers, as above set forth.

The above-described escutcheon parts, and particularly the screw-connected tubes 1S and 20, provide convenient means for adjusting the same to doors of Varying thicknesses and forrinlysecuring the escutcheon to a door by turning the plate 19 and screwing tube 20 into tube 18, so that said plate 19 remains fixed in proper position to receive a key.

The tumblers F have an aperture 7.9 through them for permitting a screw 1U to be inserted, which secures the back plate A? of the lockcase to the latter.

Hindicates the usual bolt-plate on the doorjamb K. The lock may, if desired, be used with an ordinary perforated plate N secured to said door-jamb, as illustrated in Fig. 1l.

The dotted diagrams R in Figs.` 1'L and 1 indicate the position of the end of the bolt 'I3 as abutting against the` face of the plate in the door-jamb, while the-end of the bolt 3 is in engagement with plate llor N. The said abutment of bolt l1 against the jamb-plate, as aforesaid, while the `outer endof the bolt is in a locked `position in said plate, as in Fig. 1, results in bringing the studs e on the arms c of the bolt 13 to the position relative to the recesses `in the borders of the tumblers shown in Fig. 1, thus permitting the tumblers to drop behind the ward 12 on bolt 3 and retain said boltin said locked position.

NVhen the door on which the lock is secured is open, the outer end of bolt 3 normally projects beyond the face-plate 2 of the lock, as in ordinary spring-locks, actuated by the sprin 11, and at the same time the outer end of bolt B likewise projects, by the action of spring d, beyond the surface of said plate 2; but under said conditions of bolts 8 and l5 the studs e on the arms c of bolt B are brought to a posi tion forward of the recesses t' in the edges of the tumblers, thereby sustaining their free ends all in line, so that bolt may have a free rearward motion when the end thereof strikes the jainb-plate II in shutting the door. The door is therebylooked; but said inward movement of the locking-bolt 3 causes the engagement of the `pin 1.3 on said last-named bolt with one of the studs e on an arm c of bolt B, whereby the said studs e are brought to the positions relative to the recesses fi in the tumblers shown in Fig. 1, letting the ends of the tumblers drop behind the said ward 12 on the bolt 3, thereby locking the latter in its outward position. The door may now be unlocked from the inside by drawing bolt B and studs e farther backward through. knob D` to the position shown in Fig. 5 and then turning knob 5 to operate lever E, or the door may be unlocked from the outside by the key 15 op- IOO TIO

erating the tumblers and shank 4 and lever E, as aforesaid.

The bolts 3 and B may both be secured in the positions shown in Fig. 6, wherein neither bolt projects beyond the face of the plate 2, by pushing said bolts inwardly by applying the fingers directly thereto or by operating the lever E by knob 5 or by the key 15. After the last-named adjustment, if desired, bolt 3 may be released by moving bolt B, through knob D, farther backward, as in Fig. 5, thereby, through studs e, (one or both,) bringing slots o in the ends of the tumblers into such position relative to ward 12 on bolt 3 that the said ward is disengaged from the tumblers.

Having thus described my invention, what l claim, and desire to secure by Letters Patent, is-

1. ln a lock of the class described, a group of tumblers pivoted by one end and arranged side by side having longitudinally-slotted free ends, each tumbler having a rectangular opening therein at the inner end of said slot, and having recesses in the opposite edges thereof, combined with a sliding tumbler-setting bolt having studs extending across the opposite edges of said tumblers in proximity to the said recesses in the borders thereof, said tumbler-setting bolt having an engagement with the door-jamb when the lock is in proximity thereto, combined with a spring acting to move said tumbler-setting bolt outwardly of the lock-case, a main bolt having a ward thereon for entering all of said tumblerslots simultaneously and engaging with the border of said rectangular opening, when said main bolt is moved into the lock-case one or more springs acting to move said main bolt outwardly of the lock-case, and a lever connected with a knob outside of the lockcase for drawing said last-named bolt into the lock-case, substantially as set forth.

2. In combination, the main bolt 3, having a stud 13, projecting from one edge thereof, combined with springs for moving said bolt outwardly of the lock-case, and the tumblersetting bolt, B, having studs e, thereon, one thereof having engagement with said stud 13, a spring acting to move said bolt B, outwardly of the case, and a lever operated from outside the case and engaging with said bolt 3, whereby the latter is drawn into the lockcase, substantially as set forth.

3. In combination, the hollow shank 4, of the knob 5, having a lever thereon for operating the main bolt, and having the shoulders 6, 6, on said shank, combined with the tumblers, a key-guiding post extending through the key-openings in said tumblers, and entering said shank and having a longitudinal slot therein to receive a key, and the key having wards thereon for engaging the borders of said key-openings, and a projection for engaging one of said shoulders 6, 6, substantially as set forth.

4. The hollow shank 4, of the knob 5, having lever E, thereon and the shoulders 6, 6, on said shank, combined with the key-guiding post J, entering said shank and having a key-slot therein, the escutcheon-plate 19, having the screwed tubular part 20, thereon, and the key-guiding barrel 21, fitted thereinto, the tube 18, having a screw engagement with said tube 20, and the metal washer 16, engaged by one end of said tube 18, substantially as set forth.

5. In combination, a door having a lock secured thereto and containing the key-guiding post J, a metal washer 16, surrounding said post and intermediate of the lock and the door, a tube 18, having a flange engagement by one end with said washer, and internally screwthreaded,the escutcheon-plate 19, having an externally-screw-threaded tube 20, fixed thereon, and engaging with said tube 18, and the key-guiding barrel 21, tted in said escutcheon -plate and its connected tube 20, substantially as set forth.

CHARLES W. SQUIRES.

Witnesses:

K. I. CLEMoNs, H. A. CHAPIN. 

